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Vehicle Info NeededXFI Sportsman EFI Engine Management System Basic Kit with 4150 Throttle Body
Ships on 12/10/2026
Lowest Price GuaranteeThrottle Body Features:
- Same throttle body thats available with EZ-EFI 2.0
- All sensors plug into main harness via single connector
- Holley carb-style: throttle linkage, overall height & 4150 bolt pattern
- (8) hidden injectors; Uses (4) at idle & phases in additional (4) as needed
- Supports stock-to-1200HP; Due to advanced injector staging
- Fuel pulse damper creates precise fuel control
- Return or returnless-style fuel systems supported
- E85-capable up to 800HP
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
FAST's XFI Sportsman Engine Management Systems is a bank-to-bank, fully software-tunable EFI setup designed for muscle car, late model street and sportsman drag racing engines, along with boosted and individual runner throttle body applications. The FAST XFI Sportsman System features full tables to monitor fueling, acceleration fuel, timing and air/fuel targets, while full function data logging. It supports both naturally aspirated and boosted applications up to 5 BAR, is compatible with wet nitrous and has nitrous timing retard control. Built-in CAN network support for the EZ-TCU, EZ-LS and XIM means users can easily plug and play those components with the included CAN wire.
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Also featured, a Bosch wideband 02 sensor that utilizes built-in diagnostic LEDs, a waterproof ECU enclosure and includes a premium, mesh-type, wire loom multi-port harness. Compatible with return and returnless fuel systems, XFI Sportsman is designed for use with high-impedance injectors, and works with a variety of multi-port systems or either generation of the FAST EZ-EFI throttle body. Configurable to work with FAST distributors, FAST crank triggers, EZ-LS, XIM or the RPM/tach signal from an aftermarket CD ignition box, XFI eDash, HEI big cap distributor or included tach adapter.
Requires a laptop for tuning and uses FAST C-Com software, which comes packaged along with the necessary USB connectivity cable and user-configurable auxiliary input channel. The system offers both load-indexed Speed Density or Alpha-N fuel strategies; most users will use Speed Density but the Alpha-N option is specifically added to serve sportsman drag racers looking for absolute consistency.
Features:
- Designed for muscle car, late model, boosted, individual runner throttle body and sportsman racing engines
- Easy-to-use programmable and custom-tunable unit fits perfectly between EZ-EFI 2.0 and XFI segments
- Utilizes FAST C-COM software – comes packaged along with necessary USB connectively cable
- Utilizes Speed Density and Alpha-N fuel strategies; Alpha-N included just for sportsman drag racers
- Internal Data Logging, as well as full tables to monitor fuel
- Supports N/A and boosted applications up to 5 bar, works with nitrous and features nitrous timing retard control
- CAN network support for EZ-TCU, EZ-LS and XIM for plug-n-play with included CAN wire
- Compatible with multi-port systems and either generation EZ-EFI throttle body
- Dimensions: 7.5"W x 4"H x 2"D
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